4TH CLASS POWER ENGINEERING UNIT A7: INTRODUCTORY FLUID HANDLING
TECHNOLOGY QUESTIONS AND ALL ANSWERS VERIFIED
The valve's material designation:
Choose one:
a. indicates the material's usage
b. identifies the material of the valve; c. provides the maximum temperature to
which the valve can be exposed; and d. indicates the material's suitability.
ANSWER b
Three-meter spacing between pipe hangers allow you to: Choose one:
a. align the pipe and keep it out of the way of foot traffic b. establish an
appropriate drainage slope, align the pipe, and provide unrestricted pipe
expansion
c. provide an appropriate drainage slope, stop leaks, d. keep the pipe out of the
way of foot traffic— ANSWER b
A non-special alloy steel valve can be used up to the following maximum
temperature:
Choose one:
280°C a. 425°C b.
c. 650 °C d. 1,000 °C ANSWER c
It is essential to do the following before adding any steam to a steam piping
system:
Choose one:
Warm the line up correctly, make sure there is no water or condensate in the
pipes, crack open the steam valve, and make sure the steam pressure is at its
highest level without opening the boiler safety valve. ANSWER b
To change from a fully closed to a fully open position, a simple ball valve needs
to be turned this far:
Choose one:
One complete turn
b. three-fourths of a turn; c. one-two-turn; d. one-fourth of a turn - ANSWER
d
, Typically, two-inch nominal pipe sizes and less are welded together by:
Choose one:
The oxygen-acetylene method, socket welding, butt welding, and non-pressure
welders are the first three methods. ANSWER b
When there is very little space between the handle and a fixed surface, you
would use this kind of valve:
Choose one:
A non-rising stem valve, a check valve, a ball valve, and a safety valve Respond
to a
One of the following could happen if steam lines are not properly drained: a.
excessive steam pressures b. low line pressure c. water hammer
d. overburden the pipe with weight - ANSWER c
When a boiler is linked to a common main, the stop and check valve in the
boiler output serves the following purpose:
Choose one:
a. Enables boiler isolation without shutting off the stop valve b. Prevents steam
from flowing backward from the header into a boiler at lower pressure c. A
check valve can block steam from entering the main header d. Needs to be fitted
on all boilers - ANSWER b
Pipe fittings that lack a clear identification label should be:
Choose one:
ANSWER c: utilized exclusively with water systems; tested prior to use;
rejected; and reported to the boilers branch
For a pressure-reducing valve to operate continuously and safely, the valve
station needs to have:
Choose one:
a. a downstream safety valve b. a downstream pressure gauge, downstream
safety valve, and by-pass loop
c. At least Schedule 80 piping is used in the station's piping
The valve is followed immediately by a Y-strainer. ANSWER b
Tables are created that provide the dimensions and specifications for pipes with
different wall thicknesses.
Choose one:
Volume in cubic meters; length in centimeters; weight in kilograms per meter;
thickness in centimeters; ANSWER c
A rising spindle steam stop valve has the following benefits: Choose one:
TECHNOLOGY QUESTIONS AND ALL ANSWERS VERIFIED
The valve's material designation:
Choose one:
a. indicates the material's usage
b. identifies the material of the valve; c. provides the maximum temperature to
which the valve can be exposed; and d. indicates the material's suitability.
ANSWER b
Three-meter spacing between pipe hangers allow you to: Choose one:
a. align the pipe and keep it out of the way of foot traffic b. establish an
appropriate drainage slope, align the pipe, and provide unrestricted pipe
expansion
c. provide an appropriate drainage slope, stop leaks, d. keep the pipe out of the
way of foot traffic— ANSWER b
A non-special alloy steel valve can be used up to the following maximum
temperature:
Choose one:
280°C a. 425°C b.
c. 650 °C d. 1,000 °C ANSWER c
It is essential to do the following before adding any steam to a steam piping
system:
Choose one:
Warm the line up correctly, make sure there is no water or condensate in the
pipes, crack open the steam valve, and make sure the steam pressure is at its
highest level without opening the boiler safety valve. ANSWER b
To change from a fully closed to a fully open position, a simple ball valve needs
to be turned this far:
Choose one:
One complete turn
b. three-fourths of a turn; c. one-two-turn; d. one-fourth of a turn - ANSWER
d
, Typically, two-inch nominal pipe sizes and less are welded together by:
Choose one:
The oxygen-acetylene method, socket welding, butt welding, and non-pressure
welders are the first three methods. ANSWER b
When there is very little space between the handle and a fixed surface, you
would use this kind of valve:
Choose one:
A non-rising stem valve, a check valve, a ball valve, and a safety valve Respond
to a
One of the following could happen if steam lines are not properly drained: a.
excessive steam pressures b. low line pressure c. water hammer
d. overburden the pipe with weight - ANSWER c
When a boiler is linked to a common main, the stop and check valve in the
boiler output serves the following purpose:
Choose one:
a. Enables boiler isolation without shutting off the stop valve b. Prevents steam
from flowing backward from the header into a boiler at lower pressure c. A
check valve can block steam from entering the main header d. Needs to be fitted
on all boilers - ANSWER b
Pipe fittings that lack a clear identification label should be:
Choose one:
ANSWER c: utilized exclusively with water systems; tested prior to use;
rejected; and reported to the boilers branch
For a pressure-reducing valve to operate continuously and safely, the valve
station needs to have:
Choose one:
a. a downstream safety valve b. a downstream pressure gauge, downstream
safety valve, and by-pass loop
c. At least Schedule 80 piping is used in the station's piping
The valve is followed immediately by a Y-strainer. ANSWER b
Tables are created that provide the dimensions and specifications for pipes with
different wall thicknesses.
Choose one:
Volume in cubic meters; length in centimeters; weight in kilograms per meter;
thickness in centimeters; ANSWER c
A rising spindle steam stop valve has the following benefits: Choose one:
